Veneer jointing and gluing machine



May l13, 1941. G. M. GusTlN y VENEER JOINTING AND GLUING MACHINE FiledAug. 1, v195s s sheets-sheet 2 INVENTOR.

May 13 1941; G. M. GUsTlN l 2,242,179

A VENEER JOINTING AND GLUING MACHINE Filed Aug. 1, 1938 3 Sheets-Sheet5' .INVNTOR 1%. ATTORNEY,I

' vthereof will accurately t the edges together. 1

Patented May 194i f VENEER J OINTING AND GLUING George Milton. Gustin,Wabash, Ind., assigner to The G. M. Diehl Machine Works, Wabash, Ind., acorporation of Indiana Application August 1, 193s. serial No. 222,310

10 lClal/ms.

'I'he present invention relates to improvements in veneer handlingmachines and has for one of its objects that of providing a machinewhich will, in one and the same operation, joint and glue the edges ofthe veneer sheets, wli'ereby when the sheets are laid edge to edge. theedges and the glue secure A further object of my invention is to providea machine which will joint and glue'a bundle of veneer sheets at one andthe same time.

A still further object of my invention is to provide a machine wherebythe bundle of veneer sheets may be fed therethrough for jointing andgluing with an even and uniform pressure on the stack of sheets so thatthe edges will be jointed to produce straight andl truel edges thereonand also spread a uniformv amount of glue on the edge of veneers withoutpermitting glue to get on the sides of veneer sheets.

For the purpose of disclosing the invention, I have illustrated thesamel in the accompanying drawings, in which:

Fig. 1 is a side elevation of a machine embodying myv invention;

Fig.`2 is a plan view thereof; f

Fig. 3 is 'a detail section of the compression track for the pressurechain of the apparatus;4 Fig. 4 is a detail side elevation of thepressure chain operating on the compression track illustrated in Fig. 3:

Fig. 5 is a transverse section of the compression track showing thepressure chain in position drive;

Fig. 11 is a detail elevation of the pressure chain drive;

Fig. 12 is a detail elevation of the feed chain; and

Fig. 13 is a detail section of the feed chain.

In the embodiment of the invention illustrated, a base I is provided onwhich the various-parts are adaptedto be mounted and the top of thisbase provides a bed surface 2. Arranged in the center of the bed 2 is ahousing 3 on either side pair of grooves or channels l and I0. Arrangedin-each of these grooves or channels and adapted to project abovethe'surface of the bed 2 is a liointer head I I and a glue wheel I2,each adapted to rotate in the direction of the arrows, as indicated.Also, arranged in the bottom of the bed 2 within the grooves or channelsare foraminous cover plates I2' 'through either of which air isdelivered to the edges of the veneer stacks after they have received aglue application.

Each of the traveling chains and pressure plates 1 and 8 is of the sameconstruction and it is, therefore, only necessary to describespecically'one of the same. Each of the traveling chains comprisespreferably a linked chain Il of the character illustrated in Figs. 4'and 5. Plate members Il having downwardly extending spaced-apart lugs I5are carried bythe chain, provision being made for the spaced apart lugsto embrace the side links of the chain and receive the extended ends I0of the pivot members I'l cf the chain.

For providing a pressure track for this continuous pressure chain, Iprovide a preferably U-shaped member I8l which is supported on the bed 2and which is adjustable to and from the chain 4 by `means of suitableadjusting screws I9 carried in brackets 2li extending from the side ofthe bed, I. These screws are manipulated by suitable mechanism and themechanism of each screw is, simultaneously operated bya common shaft '2iso thatboth ends of the U-shaped backing member I I may be adjusted atthe same time.. The U-shaped member Il is adapted to supporton its frontface `a series of v pressure bars. 22, each `ofwhich is supported in abracket 22" pivotally mounted between the side walls of the member Il.To this end, the bracket at one end is provided with a pivot pin 23which, as illustrated in Fig. 5, is pivoted in the side walls Il. Thesebrackets 22" are substantially U-shaped in cross section. as shown inFig. 5 and each of the pressure plates 22 has a downwardly lextendingportion 22' fitting between the legs lof the bracket vand adapted toreceive a pivot pin 22' which extends through vthe bracket and throughthe extension 22'. The forward end" of the bracketis provided with aforwardly extending projecting ilnger 24 fiattened as at 25 on its uppersurface and adapted to bear againstl the pivot pin 22 -of the nextadiaof vwhich is arranged to travel a continuously drivenchainindicated' at providing driving surfaces 5 and l adapted tocooperate Awith conveyor chains. .There are two sets of these conveyorchains, one, set indicated at l being arranged on one -slde of thecenter chain and the other sets, indicated at 8 being arranged on theopposite side thereof to thereby form between the conveyor chain and thepressure chains a cent bracket. Pressure springs 20 are interposedbetween theforward end of the bracket 22" and the back 2l of the housingIl, these springs being centered on lugs 28 on the bracket and 2l on thehousing.

The track sections or pressure bars 22. as shown, are substantiallyU-shaped, having a flattened outer surface $0 on which-the inner facerof the pressure plate Il is adapted to'rest,

the conveyor chain i3 being adapted to be received between the legs ofthe track section. These track sections, as above described, areprovided along the entire length of each of the pressure members 1 and 8to bias the pressure members toward the backing chain 4 so 4that as theveneer stack is drawn through the throats l and il, they will be pressedagainst the backing chain 4 with an even and uniform pressure and nrmlyheld in stacked relation.

The pressure chains and the backing'chains are all driven substantiallyat the same speed from a single driving motor 3l suitably supported onthe side of the` bed l. The shaft of this motor has a worm gear drivingconnection with a worm gear 22 mounted on a vertically extending shaft33. This shaft is provided with a driving sprocket J4 adapted to drivethe drivremoval of the glue pot when desired. provide a depressing cam4I on the end of a shaft '62 rotatably mounted in downwardly extendinglugs 83 and adapted to engage a projection 64 on ing chain indicated at35`which, in turn;v drives the driving sprocket 36 carried on avertically disposed shaft 31 which shaft, in turn, carries a drivingsprocket for the backing chain 4. This shaft l1 also is provided with asecond driving sprocket 3l adapted to receive a driving chain Il in turndriving a sprocket 40 on a swinging arm 4l'. The free end of this armcarries a gear 4i' adapted to mesh with and drive the gear 42 on shaft42' which carries a driving sprocket for the pressure chain 1. Aswinging arm 43 is mounted on this shaft and has its opposite endpivotally and adjustably mounted in aslot 4|" in the end of the arm 4l.

At the opposite end of the machine, backing chain 4 passes over asprocket 44 mounted on the shaft 44' 4which drives the pressure chain 8by a gear and chain drive similar -to that for driving chain 1 fromshaft 31.`

It is thus seen that all of the conveyor and pressure chains aresimultaneously and coinci-` dently driven from the single driving means.

As illustrated in Figs. 6 and 7 and 8, each of the glue wheels I2 ismounted in and receives glue from a glue, pot 53. As each of the gluewheels is of the same constructionl a description of one only isnecessary. One wall of the glue pot is provided with an opening 54extending downwardly from the topf thereof to accommodate the drivingshaft of the glue wheel. Each glue pot is provided with a cover member52 adapted to be supported ou the side walls and between the end wallsof the pot, the side walls of the glue pot being somewhat shorter inheight than the end walls to permit the cover 52 to be countersunk belowthe top of the end walls so that the top surface of the cover will beush with the top surface of the end walls. 'Ihis cover is provided witha pair of spaced apart downwardly extending lugs B5 between which ispivotally mounted on the pivot pin 5l a supporting yoke 51 at theforward end of' which, the glue wheel is adapted to be supported on theshaft Il mounted between the fingers of the yoke. The yoke is biased,and with it the glue wheel, in a raised position, by a coiled spring 5B'having one end connected to the yoke, and the other connected to a lug59 on the under side of the cover I2, whereby the glue wheel is normallymaintained in its raised and operative position for contact with theedge ofthe veneer stack as it passes through the machine. The glue potis adapted to be suppo'rted in the position beneath the bed 2 onsuitable supporting rails l0 so that the same can be slid in and out ofposition and in order 4that the glue wheel may be depressed below thesurface of the cover 52 to permit the the end of the yoke 51. The outerend of this shaft 82 projects through a slot 45 in the wall of the gluepot and the outer end of this shaft is provided with a crank arm 6Iwhereby by the rotation of a crank arm, the cam 6| may be rotated todepress the yoke 51 and with it the glue wheel so that the glue wheelmay be lowered to or below the top surface of the cover 52 permittingthe glue pot as a unit to be slid out from under the bed 2. Obviously,when the glue pot is slid into position, the glue wheel may be raised toits gluing position by the reverse movement of the crank it to permitthis glue wheel to project through a slot in the bed 2 whereby it willbe in the path of the stack of veneers as they pass through the machine.'I'he shaft 58 of each of the glue wheels is provided at its inner endwith a spiral worm gear Il adapted in turn to m'esh -with spiral wheels$9 and 10 on the longitudinally extending shaft 1 I. This shaft isdriven by a bevel gear train 12 from the shaft 33 which, as heretoforeexplained, 'is driven from the main drive motor 3|.

In addition to tli'eglue wheels, there is provided in each of thethroats 9 and I0 a jointer head Il' which extends above the surface ofthe bed and each jointer head is driven from its separate motor 14, theiointer head being mountedon the shaft 15 of the motor.

Por the purpose of delivering heated air to the glued edges of the stackof veneer sheets after they have passed beyond the glue wheel, as hasheretofore been explained, the bottom of the bed is provided with aforaminous portion I2' which forms the top of a conduit 16 adapted toreceive heated air from a suitable blower 11. y

In operation, the stack of veneer sheets is fed into the throat I0 fromthe righthand side as it is picked up by the backing chain 5 and thepressure chain forming the throat. Itis fed forward, to the left,looking at Fig. 2, over the jointer head II whereby the edges of thesheets forming the stack are properly ltrimmed and smoothed. Afterpassing over the jointer head, the stack passes over the glue wheel l2which, rotating in the glue pot, applies a smooth layer of glue to theedges of the sheets forming the stack and by continued passage, thisglue is dried through the delivery of hot air thereto. After the stackhas been passed through one throat, the stack is turned upside down topresent a new face or edge and it is fed back to the right through theother throat i having its opposite edge jointed and glued in the samemanner.

I claim as my invention:

1. In a device of the character described, a pressure track for aconveyor belt comprising a plurality of pressure track brackets, eachpivotally supported at one end, each bracket having pivotally mountedthereon a pressure track member, biasing springs for biasing saidpressure track brackets in a pressure direction, each of the trackmembers comprising a U-shapeci segment, a continuously moving chainadapted to travel between the legs of said U-shaped members and pressureplates-carried by said chain adapted to bear on said pressure tracks.

2. In a-devilce of the character described, the combination with asubstantially horizontally disposed bed,. of a pair of continuouslymoving belts arranged above said bed, spaced apart from one another anddisposed in facing relation, a glue Wheel adapted to project above saidbed, a glue pot supported beneath said bed and including a removabletop, a yoke pivoted beneath said top and adapted to support at its freeend said glue wheel, means for biasing said yoke to project said gluewheel above said bed, and means accessible from the exterior of the gluepot for moving the free end of said yoke downwardly to move the glue.wheel below the top of said bed.

3. The combination with a bed, of a pair of laterally spaced conveyorsdisposed above and traveling across the top of said bed and having theirmaterial-engaging faces disposed at right angles to the top of the bedto provide traveling clamping means for supporting a plurality of veneersheets in edged relation to said bed, a laterally stationary runway forone of said conveyors and a resilient backing for said other conveyorcomprising a plurality of presser plates, each pivotally supported on apivotally mounted spring pressed supporting arm, and means projectingabove said bed between said conveyors for operating on the edges of saidveneers as they are progressively moved by said conveyors.

4. The combination with a bed, of a laterally stationary track abovesaid bed extending across said bed and having a face extending at rightangles to the bed,` a continuous conveyor adapted to travel on saidtrack, a supporting unit disposed above said bed facing said conveyorand laterally adjustable relatively thereto, a track carried by saidsupporting unit and formed of a plurality of units, each unit comprisingan arm pivoted on said supporting unit, a presser plate pivoted on saidarm and a spring bearing on said arm, a continuous conveyor adapted totravel on said second-mentioned track whereby an assembled bundle ofveneer sheets may be clamped between said conveyors and fed forwardly,and means projecting above said bed between said conveyors for operatingupon the edges of said veneer sheets.

5. In a device of the character described, in combination, a conveyorbelt, a pressure ilatfaced track for said conveyor belt comprising aplurality of track sections, a plurality of pivoted lever arms, eachpivotally connected at one end to a track section and pivotallyconnected at the other end to a support, and biasing means for biasingsaid lever arms in pressure direction. and a continuous conveyor adaptedto travel over said sections.

6. In a device of the character described. in combination, a conveyorbelt, a pressure i'latfaced track comprising a plurality of trackassociated with said belt sections, a lever for each of said sectionshaving one end pivotally con nected to the section and the other endpivotally connected to a support, means for biasing one end of saidlever in a pressure direction, and means for limiting the movement ofsaid lever in pressure direction, and a continuous conveyor adapted totravelon said track sections.

'7. In a device of the character described, in combination, a rotarywood finishing tool of sufcient width to engage and trim the edge of abundle of veneer sheets,-an adhesive applying -roll of sufiicient widthto apply adhesive to the finished edge oi' said bundle and arranged inseries with said tool and clamping and feeding means 'constructed toclamp a plurality of veneer sheets in face to face relation to form acompact bundle and present the edge of said bundle to said tool and rolland movable relatively to said tool and roll to progressively move theedge of said compacted bundle in contact with and across the peripheryof said tool while said tool isrotating to form on said edge acompletely smooth uniformly flat surface and then while maintaining thebundle undisturbed and in the condition it leaves the finishing toolacross and in. contact with said adhesive applying roll. to spread onsaid finished edge surface a film of adhesive.

8. In a device of the character described, the combination with a rotarywood nishing tool of su'fdcient width to engage and trim the edge 'of abundle of veneer sheets, an adhesive applywith and across 'the`periphery of the tool while said tool is rotating'. to form onsaid'edge a completely smooth uniformly nat surface and then whilemaintaining the bundle undisturbed and in the condition it leaves thetool across and in contact with said roll to spread on said nished edgesurface a lm of adhesive, and means for directing a drying current ofair acrdss said glued edge after it leaves the gluing roll.

9. In a device of the character described, in combination, a ilatsubstantially horizontally disposed bed, a jointer planer head,rotatably mounted in said bed and adapted to extend above said bed, anadhesive applying roll disposed in said bed in line with said jointerhead and adapted to extend above said bed, a pair of horizontallytraveling laterally spaced conveyors above said bed, traveling in pathsanking said jointer and glue roll and with their faces disposed at rightangles to the plane of the bed, at least one of said conveyors beingresiliently backed to securely clamp between the same andi the oppositeconveyor a plurality of veneer sheets in face to face relation and feedthe clamped -bundle edgewise across the jointer head to smooth the edgeof the bundle and while in clamped relation edgewise across the glueroll to apply glue to said smoothed surface.

10. In a device of the character described, in combination, a fiatsubstantially horizontally disposed bed, a jointer planer head rotatablymounted in said bed and adapted to extend above said bed, a glue rolldisposed in said bed in line with said head and adapted to project aboveits surface of said bed, a pair` of horizontally traveling laterallyspaced conveyors above said table, traveling in paths flanking saidjointer and glue roll and with their faces disposed at right angles tothe path of the table, at least one of said conveyors being resilientlybacked to securely clamp between the same a plurality of veneer sheetsin face to face relation and feed the clamped bundle edgewiseacross theiointer to smooth the edge of the bundle and while in clamped relationedgewise across the roll to apply glue to said smoothed surface, andmeans for coincidently driving said conveyors at the same speed'. A

4GEORGE MILTON GUSTIN.

' OEMIFIOATE- OF CORRECTION. Patent No. 2,2h2,179. 4my 15, 1914.1.l

' GEORGE MILTON GUSTIN. l n It is hereby certified that error appears inthe printed specification of the above numbered patent requiringcorrection as follows: Page 5, first i column, line L5-14.6, claim5,jstrike out "flat-faced" and insert the same before "track" inl line147,-. same claim; lines'- 5 5, 56am 57, 'claim 6, for "pressureflat-faced track comprising a plurality of track as sociated with- Asaidbelt s'ezctionsf' read "pressure track associated with said beltcomprising a` plurality of flat-faced track sections-#fand that thesaidA Letters P atent'should 'be read with this correction therein ihatthe same may conform to the recor'd of the case in the ,Patent Office. r

Signed and sealed this 214th clay of June, AUD. 1.9141.

v Henry Van Arsdale, (Seal) l Acting Commissioner of Patents.

